20452923864 has 48 divisors (see below), whose sum is σ = 55623230520. Its totient is φ = 6789346560.

The previous prime is 20452923823. The next prime is 20452923889. The reversal of 20452923864 is 46832925402.

20452923864 is a `hidden beast` number, since 20 + 4 + 529 + 23 + 86 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 572002 + ... + 606705.

Almost surely, 2^20452923864 is an apocalyptic number.

20452923864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20452923864 is an abundant number, since it is smaller than the sum of its proper divisors (35170306656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20452923864 is a wasteful number, since it uses less digits than its factorization.

20452923864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178960 (or 1178953 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 20452923864 in words is "twenty billion, four hundred fifty-two million, nine hundred twenty-three thousand, eight hundred sixty-four".